What's the main difference between Focuh and BlockSite?

The honest difference is what 'free' means. Focuh is free with no account, no telemetry, and no cap on how many sites you block. BlockSite's free tier limits you to 3 blocked sites and requires you to create an account, with scheduling and extra sites locked behind a paid plan. If you only ever block 3 sites, BlockSite works. If you want more, Focuh covers it at no cost.

Is BlockSite actually free?

BlockSite has a free tier, but it caps you at blocking only 3 sites and requires an account. Anything beyond that — more sites, scheduling, password protection, syncing — sits behind a paid subscription. It's best understood as a trial rather than a full free product. Focuh, by contrast, has one tier that's free, with unlimited blocked sites and no signup, so there's nothing to upgrade to.

Does Focuh require an account like BlockSite?

No. The Focuh Chrome extension needs no account, no email, and no signup. Your blocklist and attempt counter are stored locally in Chrome storage and never leave your device. BlockSite requires you to create an account to use the extension, which means your blocking activity is tied to a profile on their servers. For people who care about privacy, that's a meaningful gap.

Can BlockSite block apps or other browsers?

The BlockSite Chrome extension blocks sites inside Chrome only, the same as any browser extension. It can't block native apps or other browsers from within Chrome. BlockSite does sell separate mobile apps. Focuh takes the same browser-only approach in its extension but pairs it with a free macOS desktop app that blocks at the operating-system level across every browser and native app.

Which is better for blocking a long list of sites?

Focuh, clearly. BlockSite's free tier stops you at 3 sites, so blocking X, Instagram, TikTok, Reddit, YouTube, and Hacker News means hitting the cap by lunch and paying to continue. Focuh's free tier has no site limit at all, so you can block an entire list of distractions in one challenge without an upsell. If your blocklist is long, the cap is the deciding factor.

Can either blocker be bypassed?

Yes. Any Chrome extension can be disabled from chrome://extensions, so a determined user can switch off either Focuh or BlockSite. Neither browser extension is unbreakable, and that's true of the whole category. If you need blocking that's genuinely hard to disable mid-session, the free Focuh Mac app uses macOS Accessibility APIs at the system level, which raises the friction far beyond a two-click browser toggle.

Does Focuh work on Windows like BlockSite?

The Focuh Chrome extension runs on any platform Chrome runs on, including Windows, because it's a browser extension. The Focuh desktop app for system-level blocking is macOS-only for now. BlockSite offers extensions and mobile apps across more platforms. If you specifically need a desktop blocker on Windows, neither Focuh's Mac app nor a browser-only setup will fully cover you there yet.

Should I switch from BlockSite to Focuh?

Switch if BlockSite's 3-site cap or account requirement is getting in your way, or if you'd rather not have your blocking tied to a profile. Focuh gives you unlimited sites, no account, and no telemetry for free, plus a free Mac app for stricter blocking. Stay on BlockSite if its free tier already fits your needs and you don't mind the account. There's no cost to trying Focuh alongside it.

Focuh vs BlockSite: 2026 Comparison

Focuh vs BlockSite compared — the difference between a genuinely free Chrome blocker and a freemium one that caps you at 3 sites and wants an account.

June 1, 2026

Focuh vs BlockSite at a glance

Focuh and BlockSite are both website blockers you install from the Chrome Web Store, but they answer the word "free" very differently. Focuh is free with no account, no telemetry, and no cap on how many sites you block. BlockSite has a free tier that stops at 3 blocked sites, requires an account, and pushes you toward a paid plan for anything more. If your blocklist is short and you don't mind signing up, BlockSite works fine. If you want to block a real list of distractions without an upsell, Focuh is the cleaner fit.

This comparison walks through where each one wins, with no pretending that a browser extension does something it can't.

What is BlockSite?

BlockSite is one of the most-installed website blockers in the world, with millions of Chrome Web Store users and a polished interface. It blocks sites you add to a list, offers a focus mode, and sells scheduling, password protection, and syncing on a paid plan. It also ships mobile apps separately from the extension.

Its reputation cuts two ways. The product is well-designed and easy to use. But the free tier is aggressively limited — 3 sites and an account requirement — which is why so many people search for an alternative once they hit the wall.

What is Focuh?

Focuh is a free Chrome extension that blocks distracting websites during a self-imposed focus challenge of any length — 30, 91, or 180 days, or a custom number. It has no account, no signup, no telemetry, no ads, and no cap on blocked sites. Your blocklist and the daily attempt counter live locally in Chrome storage and never leave your device.

Focuh is built by the team behind the free Focuh Mac app, and the two are designed to work together: the extension handles browser tabs, the desktop app handles system-wide blocking when you need it stricter.

How does the free tier compare?

This is the heart of the comparison. BlockSite's free tier is a trial in disguise — it caps blocked sites at 3 and requires an account before you can do anything. Focuh's free tier is the whole product, with no cap and no signup. There is no paid Focuh tier to upgrade to, so there's nothing held back.

Feature	Focuh	BlockSite
Genuinely free	Yes	Free tier only (trial-like)
Site limit (free)	Unlimited	3 sites
Account required	No	Yes
Telemetry	None	Yes
Long challenges (30–180 days)	Yes	Schedules, paid for more
Password protection	No	Paid
Blocks other browsers / apps	No (extension)	No (extension)
Free desktop app for OS-level blocking	Yes (macOS)	No
Price	Free	Free tier / paid plan

The single column that decides most choices is the site limit. A blocker that caps you at 3 sites isn't a free blocker — it's a paid blocker with a 3-site demo. If you only need to block YouTube and Reddit, fine. If you want X, Instagram, TikTok, Reddit, YouTube, and Hacker News gone, you'll hit BlockSite's cap before lunch.

What can each one actually block?

Both are Chrome extensions, so both block Chrome and only Chrome. Neither can block a native app or another browser from inside the extension — that's a limit of the whole category, not a knock on either tool. If you switch to Safari or open a desktop app the moment Chrome blocks you, an extension alone won't help. For the full breakdown of where browser blocks win and lose, see system-level vs browser blocking.

Where Focuh pulls ahead is the second layer. BlockSite sells separate mobile apps but has no system-level desktop blocker. Focuh pairs its extension with a free macOS app that uses Accessibility APIs to block across every browser and native app during a focus session — and it's harder to disable mid-session because it doesn't live in chrome://extensions.

Which is better for privacy?

Focuh, by a clear margin. It needs no account and collects no telemetry; your blocklist stays in local Chrome storage. BlockSite requires an account to use the extension, which ties your blocking activity to a profile on their servers. Neither approach is unusual for the category, but if you'd rather your "I keep trying to open Instagram" data never leave your laptop, the no-account model matters. For more on genuinely free, no-account options, see the best free website blocker for Chrome guide.

When should you choose BlockSite over Focuh?

Choose BlockSite if:

You only ever need to block around 3 sites
You want password protection or detailed scheduling and don't mind paying
You want one brand across extension and dedicated mobile apps
You're already invested in its interface and the cap doesn't bother you

Choose Focuh if:

You want to block more than 3 sites without paying
You'd rather not create an account or be tracked
You want long, self-imposed challenges of weeks or months
You're on a Mac and want a free desktop app for system-level blocking too

The bottom line

BlockSite is a polished, popular blocker, and its free tier is genuinely useful if your list is short. But "free" with a 3-site cap and a required account is closer to a trial than a free product. Focuh gives you unlimited sites, no account, and no telemetry at no cost, plus a free Mac app when a browser block isn't strict enough.

If BlockSite's limits are what brought you here, the free BlockSite alternative breakdown goes deeper on the specifics. Either way, you can install Focuh and run it next to BlockSite for free to see which model you actually keep using. Install Focuh free, or get the free Mac app if you need to block more than just Chrome.